let str = "sdas"
undefined
ss = str
"sdas"
ss = "sdasdasdasd"
"sdasdasdasd"
str
"sdas"
let newob;
undefined
let a = {s: "sd", d:"ss"}
undefined
a
Object { s: "sd", d: "ss" }

Object.keys(a).forEach(k => {newobj[k]} = a[k]})
SyntaxError: missing ) after argument list
debugger eval code:1:40
Object.keys(a).forEach(k => {newobj[k] = a[k]})
ReferenceError: newobj is not defined
debugger eval code:1:30
newobj = {}
Object {  }

Object.keys(a).forEach(k => {newobj[k] = a[k]})
undefined
newonj
ReferenceError: newonj is not defined
debugger eval code:1:1
newonj
ReferenceError: newonj is not defined
debugger eval code:1:1
newobj
Object { s: "sd", d: "ss" }

newobj.s = "sadasd"
"sadasd"
a
Object { s: "sd", d: "ss" }

newobj
Object { s: "sadasd", d: "ss" }

a
Object { s: "sd", d: "ss" }

a.oop = {nob: "nob"}
Object { nob: "nob" }

newobj = {}
Object {  }

a
{…}
​
d: "ss"
​
oop: {…}
​​
nob: "nob"
​​
<prototype>: Object { … }
​
s: "sd"
​
<prototype>: Object { … }

Object.keys(a).forEach(k => {newobj[k] = a[k]})
undefined
newobj
Object { s: "sd", d: "ss", oop: {…} }

a.oop.nob = "new str"
"new str"
newobj
{…}
​
d: "ss"
​
oop: {…}
​​
nob: "new str"
​​
<prototype>: Object { … }
​
s: "sd"
​
<prototype>: Object { … }

typeof(newobj) === "object"
true
typeof(1) === "object"
false
typeof(newobj) === "object"
true